. The Crayfish : an introduction to the study of Zoology. 114 THE PHYSIOLOGY OF THE COMMON CRAYFISH. There is mucli reason to believe tliat odorous bodies affect crayfish ; but it is very difficult to obtain experi-. Fia. 26.— ftiriatlUs.—A, the right antennule seen from the inner side ( x 5) ; B, a portion of the exopodite enlarged; C, olfactory ajipendage of the exopodite ; a, front view ; h, side view ( x 300); ff, olfactory appendages; «?/, auditory sac,supj30sed to be seen through the wall of the basal joint of the antennule ; h, setee ; en, endopo- dite ; 6',p, exopodite ; sj).

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. The Crayfish : an introduction to the study of Zoology. 114 THE PHYSIOLOGY OF THE COMMON CRAYFISH. There is mucli reason to believe tliat odorous bodies affect crayfish ; but it is very difficult to obtain experi-. Fia. 26.— ftiriatlUs.—A, the right antennule seen from the inner side ( x 5) ; B, a portion of the exopodite enlarged; C, olfactory ajipendage of the exopodite ; a, front view ; h, side view ( x 300); ff, olfactory appendages; «?/, auditory sac,supj30sed to be seen through the wall of the basal joint of the antennule ; h, setee ; en, endopo- dite ; 6',p, exopodite ; sj). spine of the basal joint. mental evidence of the fact. However, there is a good deal of analogical ground for the supposition that some peculiar structures, which are evidently of a sensory. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Huxley, Thomas Henry. London

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Keywords: ., bookcentury1800, bookdecade1880, bookpublisherlondon, bookyear188